John boyd and thomas a



' (Rem del; i

I i i J. & T. A. BOYD. i Machinery for Winding Yarn or Thread. No. 236,7'67.

(Patented .Ian. 18, I881;

l N. E-EIERS. FHOTWUTHOGRAPHER. WASHINGTON. D, C.

UNITED STATES PATENT OFFICE.

OHN BOYD AND THOMAS A. BOYD, on SHETTLESTON, COUNTY OF LANARK,

SCOTLAND.

MACHINERY FOR WINDING YARN OR THREAD.

SPECIFICATION forming part of Letters Patent No. 236,767, dated January 18, 1881. Application filed May 7, 1880. (No model.) Patented in Great Britain January 24, 1880.

certain improvements in Machinery for Winding Yarn or Thread, (for which we have applied for British Letters Patent to be dated 24th January, 1880, No. 323,) of which the following is a specification. I

Our invention relates to machines for windingyarn or thread singly or when doubling the same, in which machines detecter-levers combined with stopping mechanism are used for stopping the winding action on any one bobbin upon the breakage or failure of a yarn or thread. We improve the action of the detecter-levers and render them more sensitive by making them of wood, and we apply to them an adjustable balance-weight consisting of a metal helix which is held in position by a small stud, the helix being adjusted by screwing it relatively to the stud and being held securely by its spring resistance.

The guide or curl for the yarn or thread is a bent wire inserted into the end of the lever and through a piece of rubber tubing, the wire and tubing securing each other. When using sensitive detector-levers of our improved kind it is more than ordinarily desirable to have irregularitiesinthe tension ofthe yarn or thread compensated for or neutralized, so'as to prevent the unrequited stopping action of the detecter-levers, and this compensation must be effected, if possible, in a manner to suitthemanner in which the yarn or thread passes from its bobbin, cop, spindle, or other holder to'the deteeter-lever.

The bobbins off which the yarns or threads are drawn are carried byhollow spindles or tubes set-on spindles which are placed in inclined positions, being jointed to fixed points at a certain distance below the bobbins. Sta-- tionary frictional pieces are provided, against which the bobbin or apart of the bobbin-holding spindie or tube rests by itsweight, owing' to its inclined position, when not turned up-- ward therefrom by the tension of the yarn or thread as it is being drawn away. The tension may lift the bobbin or its tube clear of the frictional piece, or it may only reduce its pressure on that piece. In either case the friction will have a compensating action, as it will increase when the tension becomes diminished, and vice versa. From cops the yarns pass up to and Overa rail, and thence proceed, in a nearly horizontal direction, to the detecterlevers.

Our improvements are shown in the accompanying drawings.

Figure 1 is a transverse vertical section of a doubling winding-machine having similar winding mechanism along each side of it, but arranged for winding from bobbins at one side and from cops at the other side. Figs. 2 and 3 are an enlarged plan and sectional side elevation of the detecter-lever. Figs. 4, 5, and 6 are a plan, sectional side elevation, and end elevation of the bobbin-compensating arran gement.

The yarns or threads are wound upon bobbins 6, which rest on drums 7, fixed on continuously-rotating longitudinal shafts 8, as in Va rious well-known arrangements of doubling and winding apparatus. The bobbins 6 are carried in holders 9, jointed to frame-brackets 10, and capable of being turned up by handlevers 11. A slip-lever is used for stopping the driving action on any bobbin, 6, when a yarn or thread breaks or fails, such slip-lever bein g centered on a bracket, 12, fixed to a longitudinal center rail, 13. The slip-lever has a nearly-vertical arm or pair of arms, 14:, to the upper end of which a slip, 15, of metal or other suitable material, is jointed, and a curved lower arm, 16, extending beneath the winding-drum 7 toward the front, a balancing-weight, 17, being adjustable on a screwed projection at the back of the fulcrum.

The detecter-levers 18 are carried on a wire or spindle held in a small casting, 19, fixed to the under side of a longitudinal side rail, 20, and when any yarn or thread breaks or fails theinner end of its detecter-lever 18, the weight of which is suitably adjusted for the purpose,

drops upon the front. bent end of the lower consists of a light rod of wood, made with a boss perforated for the passage of the axial wire. The inner end of the lever has a vertical cut formed in it, and a wire hook, 21, forming the guide forthe yarn or thread, and having its shank bent at right angles, is entered up the center of the lever, with its vertical part in the end cut, which keeps the hook in the vertical position. A piece of rubber tubing, 22, is placed on the end of the lever to be acted on by the winding-drum 7 when the lever drops, so that the motion of the drum may hasten and enforce the descent of the lever and its action on the slip-lever. The wire hook or guide 21 is passed through the side of the piece of rubber tubing 22, and the hook and tubing thus serve to secure each other in place.

The detecter-lever 18 is suitably balanced or poised by means of a metallic helix, 23, placed on its outer short end, being held in place by a small stud or pin fixed into the wood. The helix is made with its coils so close that it is strained when it is screwed so as to have the stud between two coils, and it is adjusted by being screwed toward or from the fulcrum, as required, the tightness of the helix on the wood and the elastic gripe of the coils on the stud preventing it from slipping out of place.

At the left-hand side of the machine the yarns or threads pass to the books 21 of the detecter-levers 13, directly from bobbins 24, and proceed up to elevated pulleys 25, thence downward through the usual traverse-guide 26 to the bobbin 6. V V Each bobbin 24 is, as shown more fully in Figs. 4, 5, and 6, placed on a tube or hollow spindle, 27, formed with a collar or boss, 28, on its lower end, and set on a spindle, 29, which is, at its lower end, jointed to the bottoms of a pair of cheeks or small brackets, 30, extending down from a small casting, 31. This casting 31 is fixed in an opening in the board 32, carrying the bobbins 24, and it is formed with a slot, through which the spindle 29 passes, and with a projection, 33, near the outer end of the slot, this projection serving as a stationary frictional piece.

The bobbin-board 32is set at a slight inclination to throw the bobbin-spindles out of the vertical, and so that they may tend to he with the collars or bosses 28 against the frictional pieces 33, this inclination of the board being adjustable by turning the board on hinges which connect it to the side rail, 20, an arcshapcd bracket, 34, and screw-clamp 35 serving for fixing the board in any required position. The direction ofthe tension ot'the yarns or threads in proceeding from the bobbins 24 to the detector-levers 18 is such as to move the bobbins nearer the vertical position, and this tension diminishes the pressure on the stationary frictional pieces, and consequently their resistance to the rotation of the bobbins and delivery of the yarn or thread.

vious that the frictional pressure will vary in- It is obversely with the tension, and that irregularities in the tension will thus be automatically compensated for, or nearly so, by the varying resistance. It will also be quite obvious that the same mechanical action will take place if the tension of the yarn or thread is opposed by weight or pressure acting in any manner on the bobbin or its holder in a direction opposite to that of the tension, the bobbin and its holder being capable of moving in the direction of the tension or the opposi te, and hearing more or less on a stationary frictional piece accordingly.

At the right-hand side of the machine the yarns pass upward from cops 36, through clearers 37, to a longitudinal guide-rail, 38, carried by the frame-rail 20, and they proceed round the upper part of this rail 38, and thence inward to the books 21 of the detecter-levers 18, whence they proceed as at the other side of the machine. Between the guide-rail 38 and the detecter-hooks 21 there is a stationary board, 39, having near its inner edge a covering offlannel orother frictional material, which each yarn touches whenever,th rough slackness, the inner end of its detecter-lever 18 descends a little, and this increases the frictional resistance to the movement of the yarn, and in that way compensates sufficiently for the slackness. But this arrangement of frictional surface for the threads to come into contact with we'do not desire to claim in this case, as it will form the subject of a separate application.

We claim as our invention- 1. The herein-described detecter-lever, provided with a guide-hook,21,and piece ot'rubbcr tubing at one end and an adjustable helical weight, 23, at the other, substantially as set forth.

2. A detecter-lever provided at one end with a pin or stud and a metal helix, 23, whose coils gripe the said pin or stud, whereby the helix may be adjusted on the end of the lever, substantially as described.

3. A detector-lever weighted at one end and carrying at the other end a wire hook, 21, having a bent end adapted to an end cut in the lever and a rubber tube, 22, fitted over the end of the lever, all substantially as specified.

4. The combination of yarn-winding mechanism and a supporting-bracket with a bobbin-holding tube, 27, spindle 29, pivoted at an angle, and the friction-piece 33, substantially as and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

EDMUND HUNT, LOCK MOORE. 

